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ORIGINAL ARTICLE
Year : 2013  |  Volume : 41  |  Issue : 4  |  Page : 318-326

Evaluation of the role of multidetector computed tomography in biliary obstruction


Department of Radiodiagnosis and Medical Imaging; Department of Tropical Medicine and Infectious Diseases, Faculty of Medicine, Tanta University, Tanta, Egypt

Correspondence Address:
Amr Mohamed El Badry
Department of Radiodiagnosis and Medical Imaging; Department of Tropical Medicine and Infectious Diseases, Faculty of Medicine, Tanta University, Tanta
Egypt
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DOI: 10.4103/1110-1415.126194

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Objective The aim of the study was to evaluate the role of multidetector computed tomography (MDCT) cholangiography in detecting the cause and the level of biliary obstruction and also evaluating the global performance of combined axial, multiplanar reformatting (MPR), and minimum-intensity projection (MinIP) image reconstructions. Patients and methods Between January 2012 and August 2012, this study was performed on 30 patients with clinical and biochemical signs (increased serum levels of bilirubin and/or alkaline phosphatase) suggesting bile duct obstruction who referred to the CT unit in Tanta university hospital from the department of tropical medicine and infectious diseases. These patients were examined by 16-channel CT using a three-phase contrast protocol. The results obtained were compared with the results of histopathological and operative data in patients who underwent surgery. Results Our study showed that MDCT cholangiography was accurate in detecting the presence and the level of biliary obstruction in all 30 cases examined (100%), whereas it could define the cause of obstruction correctly in 93.3% of the cases. The overall performance of MPR and MinIP reconstruction in addition to conventional MDCT images showed a synergic effect to conventional axial CT images, showing an improvement in visualization in 83.3% and additional value in 30 and 16% of the cases, respectively. Conclusion MDCT cholangiography is a noninvasive and fast imaging tool in the assessment of patients with biliary obstruction. MPR and MinIP images provide an improvement of visualization of the biliary system and additional diagnostic value for differentiation of benign from malignant biliary obstruction. It represents a valuable supplement to conventional MDCT imaging of hepatopancreatic disorders.


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